Barefoot running shoe, perfect for all indoor and outdoor activities. Exceptionally lightweight, with a more breathable and water repellent upper. The Osma 5 features our new NatuRun Minimo™ outsole and an improved quick-lace system. - Materials: Coolspacer, Velukid suede. Outsole: NatuRun Minimo™ 2,5 mm. special rubber compound Colour: Gray-black-silver Last: Wide . As this is a "snug-fitting" running shoe, we recommend choosing one size bigger than your ordinary shoe, if used in other than running.